/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.webank.wedatasphere.linkis.engineconnplugin.flink.executormanager

import com.webank.wedatasphere.linkis.engineconn.core.executor.LabelExecutorManagerImpl
import com.webank.wedatasphere.linkis.engineconn.executor.entity.{Executor, SensibleExecutor}
import com.webank.wedatasphere.linkis.engineconn.once.executor.creation.OnceExecutorFactory
import com.webank.wedatasphere.linkis.manager.engineplugin.common.creation.CodeLanguageLabelExecutorFactory
import com.webank.wedatasphere.linkis.manager.label.entity.Label


class FlinkExecutorManager extends LabelExecutorManagerImpl{
  override def getReportExecutor: Executor = if (getExecutors.isEmpty) {
    val labels = defaultFactory match {
      case _: OnceExecutorFactory =>
        if (null == engineConn.getEngineCreationContext.getLabels()) Array.empty[Label[_]]
        else engineConn.getEngineCreationContext.getLabels().toArray[Label[_]](Array.empty[Label[_]])
      case labelExecutorFactory: CodeLanguageLabelExecutorFactory =>
        Array[Label[_]](labelExecutorFactory.getDefaultCodeLanguageLabel)
      case _ =>
        if (null == engineConn.getEngineCreationContext.getLabels()) Array.empty[Label[_]]
        else engineConn.getEngineCreationContext.getLabels().toArray[Label[_]](Array.empty[Label[_]])
    }
    createExecutor(engineConn.getEngineCreationContext, labels)
  } else  {
    getExecutors.maxBy {
      case executor: SensibleExecutor => executor.getStatus.ordinal()
      case executor: Executor => executor.getId.hashCode
    }
  }
}
